Something equal parts beautiful and terrifying happened in Bristol Harbour, in the UK.

A crowd was gathering at the edge of the water of the harbor, trying to get a look at the glowing creature just underneath the water.

Was it a glowing jellyfish? Or some alien/weird deep sea creature?

A biologist was called in to investigate, and said:

"It is very intriguing – I do not really know what to make of it. There is a possibility that it is a special type of jellyfish or a marine salp. It is very unusual and I have not really seen anything like it before though. What makes it even more unusual is the fact that it showed up in the middle of a really busy area."

Ha! That's one smart scientist! Two possible explanations and one logical one.

If it's weird and unexplained and in the middle of a busy area… odds are it's a hoax.

And… apparently it was! It was all a stunt set up by UKTV's entertainment channel, Watch.

The whole thing was set up to launch a new show called The Happenings all about amazing illusions set up by two master magicians.

Check out the video to see the glowing light that fooled so many AFTER THE JUMP!!